Visible-Light-Induced Cascade Reaction of Isocyanides and <i>N</i>-Arylacrylamides with Diphenylphosphine Oxide via Radical C–P and C–C Bond Formation
作者:Chun-Xiao Li、De-Shuang Tu、Rui Yao、Hong Yan、Chang-Sheng Lu
DOI:10.1021/acs.orglett.6b02413
日期:2016.10.7
An effective photoredox-mediated tandem phosphorylation/cyclization reaction of diphenylphosphine oxide with three types of radical acceptors leads to P(O)Ph2-containing phenanthridines, isoquinolines, and indolin-2-ones by formation of both C–P and C–C bonds. [Ir(ppy)2(dtbpy)]PF6 (1 mol %) was used as the catalyst, CsF or Cs2CO3 as the base, and K2S2O8 as the oxidant. A series of functional groups
有效的光氧化还原介导的二苯基氧化膦与三种类型的自由基受体的串联磷酸化/环化反应可通过形成C–P和C–C形成含P(O)Ph 2的菲啶,异喹啉和吲哚-2-酮债券。使用[Ir(ppy)2(dtbpy)] PF 6(1 mol%)作为催化剂,使用CsF或Cs 2 CO 3作为碱,使用K 2 S 2 O 8作为氧化剂。在室温下可以耐受一系列官能团。产生了中等至良好的产量。